Bids and counterbids question

Assuming FR increases their bid, can CDE make another offer or is the game over?

"If, within the Response Period, First Majestic offers to amend the First Majestic Agreement such that the Orko Board determines that the Coeur Proposal is no longer a Superior Proposal, Orko will be required to enter into an amendment to the First Majestic Agreement and implement the amended agreement. In that circumstance, no agreement will be entered into between Orko and Coeur with respect to the transaction proposed by Coeur."